
I wish all search engines disclosed their providers visibly
I used DDG for years without knowing it was a Bing proxy, simply because they were quite evasive about it. Other alternative search engines seem to do the same thing, to varying extents.
I was trying out Ecosia recently and I thought it was cool how they basically tell you on the results page which index was used. It seems you can opt-out of Google entirely, which is a nice feature for degooglers.